JP2695619B2 - Recess repair tool for sheet metal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet metal recess repairing tool for repairing an original smooth surface when a recess is formed in an automobile body, cabinet, or other various cases due to a contact accident or the like.

[0002]

2. Description of the Related Art Taking a car as an example, a large-scale breakage caused by a major accident has recently replaced the components in its vicinity. But for small dents,
When disassembling and hitting the recess from the inside to the outside,
Metallic implants, such as washers and sections, are a way to reduce the complexity and complexity of disassembly and repair.
(For example, Japanese Utility Model Application Laid-Open No. 3-40407) is welded to the recess, and the tip of a hammer capable of giving a tensile impact force called a slide hammer is locked in a locking hole provided in the metal body, and slide to a tension shaft. A method has been implemented in which a hammer is rapidly moved from front to back with arm strength to apply a tensile force to a metal body to restore the metal body to its original smooth surface.

[0003] In order to weld a metal body such as a washer or a piece to an automobile body, first, the coating of the body is peeled off with a sander or the like to expose a metal surface, and the metal body is welded to the concave portion by electric welding. Also, after applying a tensile force to the metal body and restoring it to the original smooth surface, twisting the metal body and removing it from the body, after smoothing the welded part, toning the surrounding color, It needed to be painted.

In recent years, instead of using a metal body, a recess repairing tool for sheet metal having a metal locking ring 3 at the end of a rod-shaped thermoplastic resin 2 has been used. ing. FIG. 4 shows an example of this. In this example, the concave portion 1a of the automobile body 1 is heated in advance with hot air, the rod-shaped thermoplastic resin 2 is pressed and welded to the portion, and rapidly cooled with cold air or water to return to room temperature. Thereafter, the hook-shaped locking portion 10a at the tip of the conventional slide hammer 10 described above is locked, and the hammer portion 10b is suddenly slid to apply a tensile impact force to repair.

[0005]

This restoration tool is useful in that it is not necessary to peel off the paint of the automobile body, but when a tensile impact force is applied by a slide hammer, the rod-shaped heat restoration tool is used. There is a problem that an adhesive portion between the plastic resin 2 and the metal locking ring portion 3 is peeled or cut. There is also an example in which a tension tube is extrapolated to the rod-shaped thermoplastic resin 2 and a tension hole for locking the hook-shaped locking portion 10a at the tip of the slide hammer 10 is provided in the tube. May come off.

In the present invention, the use of a thermoplastic resin having good workability is the same, but it does not break even when a tensile impact force is applied by a drawer such as a slide hammer.
An object of the present invention is to provide a sheet metal recess repair tool that can be reused a plurality of times.

[0007]

SUMMARY OF THE INVENTION The present invention comprises a plate-like thermoplastic resin , a drawer locking hole 11 having a reinforcing ring 13 substantially at the center, and a plurality of adhesive projections radially formed on the outer periphery.
12 is a sheet metal recessed part repair tool 10 having 12. The thermoplastic resin referred to here is a synthetic resin which is solid at normal temperature, becomes a molten state by heating and can be bonded to a partner, and becomes a solid in the bonded state when returned to normal temperature, for example, ethylene-acetic acid. Vinyl copolymer resin , ethylene / vinyl acetate / vinyl graft copolymer resin, acrylonitrile / styrene copolymer resin, ionomer resin and the like. These are appropriately selected and used according to the type of coating of the bonding partner and are most easily welded.

[0008] The above-mentioned bonding portion projections are radially formed around 3 or 5
It is preferable that the number, that is, the odd number is formed. Also,
The adhesive projection 12 is preferably thinner toward the tip than the base, and a metal reinforcing ring 13 is provided in the drawer locking hole 11.
Is provided, a reinforcing effect can be obtained when a tensile impact force is applied by a tensile tool such as a slide hammer.

[0009]

By simply warming the concave portion 1a of the automobile body 1 with hot air without peeling off the coating, one of the plurality of adhesive projections 12 made of a thermoplastic resin of the concave repair tool for sheet metal of the present invention is applied to that portion. Are pressed and welded, and when the temperature is returned to room temperature with cold air or the like, the solder is welded to the concave portion 1a. Cooling is fast because the adhesive projection is tapered. In this state, when the hook-shaped locking portion 10a at the tip of the slide hammer 10 is locked and the hammer portion 10b is suddenly slid backward to apply a tensile impact force, the concave portion such as the body is pulled and repaired. However, even in that case, since the hook-shaped locking portion 10a at the tip of the slide hammer 10 is locked in the hole reinforced by the central reinforcing ring 13 ,
The resin does not break or leave the hammer. Since the adhesive area is small despite its toughness, it is easy to remove the resin from the body or the like after the repair.

[0010] The bonding portion projections 12 are provided at equal intervals around the circumference of three or five.
In the case of an odd-numbered structure, if one of them is used for bonding, there will be a portion without an adhesive projection on the opposite side, so that the slide hammer 10
Usability is improved without the hook-shaped locking portion 10a at the tip being in the way.

[0011]

1 (a) and FIG. 2 are plan views of an embodiment of a sheet metal recess repairing tool according to the present invention. FIG. 1 is an example in which five adhesive projections 12 are provided radially. Reference numeral 2 denotes an example in which three adhesive projections are provided. These are made of thermoplastic resin and have a drawer locking hole 11 substantially at the center. In the hole 11, a reinforcing ring 13 formed by cutting a metal pipe to a predetermined length is provided. The thermoplastic resin in this example is an ethylene-vinyl acetate copolymer having a softening temperature of 92 ° C.

FIG. 3 shows a state of use of the sheet metal recess repair tool. The concave portion 1a of the automobile body 1 is heated in advance by hot air until the thermoplastic resin is dissolved, and one of the adhesive resin protrusions 12 of the thermoplastic resin of the sheet metal concave portion repair tool of the present invention is pressed and welded to the heated concave portion 1a. . When this is returned to normal temperature with cold air or cold water, it is welded to the concave portion 1a. In this state, as a drawer, the hook-shaped locking portion 10a at the tip of the slide hammer 10 is locked, and the hammer portion 10b is suddenly slid rearward to apply a tensile impact force. It is restored to its original flat surface.

[0013]

According to the present invention, it is possible to repair automobile bodies, cabinets, and various other cases in which dents have been formed by a quick and simple operation without peeling off the paint. It became possible to provide a stable recess repair tool without accidents. It can be used repeatedly, and cost reduction is possible.

[Brief description of the drawings]

FIG. 1 (a) is a plan view of an embodiment of a sheet metal recess repair tool of the present invention, and FIG. 1 (b) is a cross-sectional view taken along line AA in FIG. 1 (a).

FIG. 2 is a plan view of another embodiment of the sheet metal recess repair tool of the present invention.

FIG. 3 is a plan view showing a state in which a repair operation is performed using the present invention.

FIG. 4 is a plan view of the conventional product.

[Explanation of symbols]

 1 Automobile body 1a Concave part 10 Slide hammer 10a Hook-shaped locking part 10b Hammer part 11 Puller locking hole 12 Adhesive part projection 13 Reinforcement ring

Claims (2)

(57) [Claims] (1) a plate-like thermoplastic resin, which is substantially at the center;
A recess repairing tool for sheet metal, comprising a drawer locking hole having a reinforcing ring and a plurality of adhesive projections radially formed on an outer peripheral portion. 2. The repair tool according to claim 1 , wherein three or five adhesive projections are formed around the periphery.